diff --git a/lib/domains/de/hs-mainz.txt b/lib/domains/de/hs-mainz.txt
new file mode 100644
index 0000000000..de026a0d4c
--- /dev/null
+++ b/lib/domains/de/hs-mainz.txt
@@ -0,0 +1 @@
+Hochschule Mainz - University of Applied Sciences